"Unable to sign in to password protected wifi when setting up phone.: purchased an old iphone 5c for my daughter to listen to music, but when trying to activate it, wifi will not connect if there is a password, so i cannot get past the sign in portion. It will connect to a guest wifi with no password."
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Connecting an iPhone to a WiFi:
Just how new is your router? The protocols are much different, as WPA3 is of current statute. I would look at the passwords app on your own device, and see if your have the password there. Bugs may be installed, and iOS update are no longer provided for you device.
As for other Methods of Troubleshooting...
Troubleshooting iPhone WiFi:
Try these thoughts:
A. Delete ALL VPN Connections:
Are you suing aVPN here? If so, delete it.
B. Clear Temporary Internet Files:
If connecting is unsuccessful, try clearing out your Temporary Internet Files: History, Cache, and Cookies
Go Here: Clear your Safari Browser History and Set Up Content Blockers on your iPhone, iPad, or iPod touch - Apple Support
and...
C. Try Manually Restarting your iPhone:
- Go To: Settings
- Select: General
- Scroll to: the Very Bottom
- Select: Shut Down
- Slide Finger: to the Right
- Wait: 30 Seconds
- Power One: the iPhone
- Try this Once More
and...
D. Troubleshooting Connectivity:
Wi-Fi: If your iPhone won’t Connect to a Wi-Fi Network - Apple Support
and...
E. Reset your Network Settings: